I figured out the low beam bulbs are good. The fuses are good. The grounds are good. Also the old headlamp assembly units wont work now either. High beams, fog, and parking lights still working. The only thing I can see now that would be stopping them from working is the actual column piece that controls the lights. Someone else has mentioned that GM has common issues with this. Another source suggested a faulty parking brake that could cause the low beams and the DRL to not work.